[ESHOP launched] Trezor: Bitcoin hardware wallet

[Bridgewater]

I only setup ONE wallet with the Trezor after initializing it.  Why are there two Master Public Keys?

In Electrum, it says I have "Account 1"  and "Main Account."

I want to perform offline signing with the Trezor on an airgapped computer, with a watch-only Electrum for broadcasting, and would like to know which master public key to import for the watch-only side and why.

Thanks in advance.

Interesting idea but you are trying to use Trezor with Electrum in a way contrary to instructions in the user manual. A developer would have to chime in here.

Well I got it to work on Electrum 2.6.4 by importing the "Main Account" xpub on the watch-only Electrum on the online computer.  Created transaction there, then loaded it up on the offline computer, plugged my Trezor in and signed it, then copied the signed transaction back to the watch-only Electrum to broadcast it.  Still not sure where the "Account 1" xpub comes from or what it is for though.

Interestingly, my KeepKey did not work this way, while the Trezor did.

[Bridgewater]

Thanks for the information. I guess I need to spend more time learning Electrum.

After digging into it, it seems Iwas wrong, the Trezor+Electrum 2.6.4 currently does not work for truly offline signing. 

When loading a transaction from file/text/whatever to sign with the Trezor, the Electrum plugin checks to see if the necessary inputs are present. In a truly offline Electrum wallet, synchronization will never take place, so the plugin will try to talk to the server and fail instead of simply instructing the hardware wallet to sign the transaction and let the online Electrum reconcile whether or not there's money to spend.

BitcoinNewsMagazine, I understand this is not a standard use case for the Trezor, but if I can get it to work, it will certainly give me an extra bit of security.  Peace of mind that my (self-generated) mnemonic will never touch an online computer means I don't have to worry about the unlikely chance of the Trezor getting compromised (however minuscule the chances are)

[gravitate]

Guys I need to sell this. I needf the BTC. Metalic Trezor WITH cryptosteel.:
https://bitcointalk.org/index.php?topic=1410576.0

[vapourminer]

just tried to use my trezor with the bridge from mytrezor.com. after multiple failed downloads the one copy that did make it down errored on install. then tried on firefox. same deal. the finished dl errors everywhere on install (cant write blah blah).

latest firefox and a brand new chrome install, win7 64 bit pro.

computer runs flawlessly with everything else. its this computer.

trezor runs fine on my phone, a note 4 with mycelium.

so whats up. user error I assume but..

[Lincoln6Echo]

just tried to use my trezor with the bridge from mytrezor.com. after multiple failed downloads the one copy that did make it down errored on install. then tried on firefox. same deal. the finished dl errors everywhere on install (cant write blah blah).

latest firefox and a brand new chrome install, win7 64 bit pro.

computer runs flawlessly with everything else. its this computer.

trezor runs fine on my phone, a note 4 with mycelium.

so whats up. user error I assume but..

How about using Trezor with electrum on this Computer? Does this work?

[vapourminer]

i dont really want another wallet. I just wanted to manage the trezor on my (or any other) computer, like add another account or whatnot. be cool to show folks how it works.

is the trezor bridge the correct way?

hard to think this system cant run it. its pretty standard.

[BitcoinNewsMagazine]

i dont really want another wallet. I just wanted to manage the trezor on my (or any other) computer, like add another account or whatnot. be cool to show folks how it works.

is the trezor bridge the correct way?

hard to think this system cant run it. its pretty standard.

You need the bridge for Firefox, for Chrome you add the Trezor Chrome extension. Is your firewall causing problems? Make sure Trezor bridge is allowed incoming and outgoing traffic. I would try Chrome, add the extension see if that solves your problem, if not contact Trezor support. 

[vapourminer]

its not a problem with the trezor, it fires up fine on my htpc and phone. just this rig. odd as its the rig I initially set it up on.

the firewall wouldnt mess with USB ports would it?

tried front and back ports, the bride in FF and chrome with its special extension. both fail to find it at all. just stays on the "connect your trezor now" screen. on the htpc I entered the pin and I was in my account no problem.

yippee another project  

[BitcoinNewsMagazine]

its not a problem with the trezor, it fires up fine on my htpc and phone. just this rig. odd as its the rig I initially set it up on.

the firewall wouldnt mess with USB ports would it?

tried front and back ports, the bride in FF and chrome with its special extension. both fail to find it at all. just stays on the "connect your trezor now" screen. on the htpc I entered the pin and I was in my account no problem.

yippee another project  

Did you try several different USB cables to rule out a bad cable?

[vapourminer]

Did you try several different USB cables to rule out a bad cable?

yup.

initial problem was probably due to the short red cable that came with it being intermittent. once I used another cable the trezor was fine on the other pc and the phone.

still isnt detected by the main pc, even though it powers up and lists the trezor in with the computers devices (with the printer, scanners and such). its just the chrome extension and bridge wont see it.

ill probably reinstall FF, the usb drivers, chrome and see if it persists.

its more annoying than anything else.

[vapourminer]

deleted the trezor device and driver from control panel -> devices and printers, let it be rediscovered and viola! its back.

happiness..

[cor]

I'm really happy to announce that the ethical hacker and Bitcoin hero Johoe joined our team as TREZOR Cryptographer. Follow the link for complete news.


You may remember johoe from this post or from this report.

[NLNico]

That's great, congrats to both johoe and trezor team. Always feel secure with my trezor but an extra crypto/hacking genius on the team can only be good

[cor]

repost from slush

Hi all,
we just released minor update to https://beta.mytrezor.com. If no bugs will be reported in following week or two, we'll most likely release this as stable directly to mytrezor.com domain.
This release included some stability fixes and memory optimizations for very large accounts (10000+ addresses and transactions). It's not blazingly fast, but it is stable.

There're also some new features added:

• Send dialog uses dynamic fee calculations using https://bitcoinfees.21.co API.
• Fees are calculated per bytes, not kilobytes, so transactions should be a bit cheaper than before, for the same tx size.
• CSV import in Send dialog now accepts also amounts in fiat currencies (and convert them into BTC using Bitpay API to BTC value).
  

Please let us know on support@bitcointrezor.com if you find any problem in current beta! Thank you :-)

[dsattler]

Great news, trezor to support ethereum soon:
http://www.newsbtc.com/2016/05/18/32225/

[AussieHash]

How much privacy do you give up by using the website myTrezor.com to store your bitcoins?
Can the owners / webmaster of myTrezor.com see how many bitcoins you have?  Your bitcoin addresses?

https://www.reddit.com/r/TREZOR/comments/4k3to6/betamytrezorcom_updated/d3lkurr

[Carlton Banks]

How much privacy do you give up by using the website myTrezor.com to store your bitcoins?

Can the owners / webmaster of myTrezor.com see how many bitcoins you have?  Your bitcoin addresses?

They could see how many Bitcoins a given Trezor extended public key has (and so they know all those addresses inherently), but I'm not sure if they will know the master public key that proves all the xpubs belong to the same person/master account. They don't necessarily know "who" you are despite whatever public key information they can access, but remember that they have the IP addresses you use to visit the myTrezor.com website.

On balance, myTrezor.com has some quite valuable information about it's users, so be careful the way you use it if you value your financial privacy (be aware also that myTrezor.com must collect this information in order to operate at all, it's a knock-on effect of using a client-sever model for a wallet service).

[molecular]

How much privacy do you give up by using the website myTrezor.com to store your bitcoins?

Can the owners / webmaster of myTrezor.com see how many bitcoins you have?  Your bitcoin addresses?

Just to make sure you know there are alternatives: other wallets (like electrum, mycelium and probably more) offer trezor support. Not to say they have less privacy concerns, but at least with electrum, you have a choice of server and everybody can run one.

[BitcoinNewsMagazine]

How much privacy do you give up by using the website myTrezor.com to store your bitcoins?

Can the owners / webmaster of myTrezor.com see how many bitcoins you have?  Your bitcoin addresses?

On balance, myTrezor.com has some quite valuable information about it's users, so be careful the way you use it if you value your financial privacy (be aware also that myTrezor.com must collect this information in order to operate at all, it's a knock-on effect of using a client-sever model for a wallet service).

What does this mean?  "Quite valuable information" ? You make it seem like they know your name, address, social security #, the works...

See the reddit thread at https://www.reddit.com/r/TREZOR/comments/4k3to6/betamytrezorcom_updated/

There're operational logs of webserver (nginx), which are automatically rotated. We do not log any financially sensitive informations like addresses/xpubs (they arent even sent to server).

Definitely, for perfect privacy, I recommend to use private bitcore instance. mytrezor itself does not log anything.

As noted myTrezor is not a problem, and you can point myTrezor.com to your own linux box running Bitcore if you want to take the trouble.

[dsattler]

I've just read on the github of the Copay wallet that they have support for ledger and trezor.
Has anyone tried this and can share his/her experience with this? That would be very interesting!